US1046748A - Electric vehicle-motor and means for suspending the same. - Google Patents

Description

G. M. EATON. E1 BGTRIG VEHIGLB MOTOR AND MEANS FOR SUSPENDING THE SAME.

APILIGATION PILBD SEPT. 8, 1908. 1,046,748. 7 Patented Dec; 10, 1912.

2 SHEETS SHEET 1.

WITNESSES: IN ENTOR a v Y Y AfiORNEY.

G. M. BATON. I ELECTRIC VEHICLE MOTOR AND MEANS FOR SUSPBNDING THE SAME.

' APPLIUATION FILED SEPT. 8, 1908. 1,046,748, Patented Dec. 10, 1912.

2 SHEETS-SHEET 2.

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WJTNESSES: v

ATTORNEY GEORGE a. EATON, oEwILKINsBUEe, PENNSYLVANIA, ASSIGNOR, BY MESNE asgreN- Be it known that I, Gnome M. EA'roN, a,

m e'locomotives which are ca a MENcrs-"ro WESTINGHOUSE ELECTRIC PITTSBURGH, PENNSYLVANIA.

& MANUFACTURING COMPANY, or L AST ELECTRIC v'EHIcrL -Moron ANn'mEANs FOR sUsrE mNe THE SAME;-

' Specification of Letters Patent. Patented Dec. 10, 19 12.

Application filed" September 8 1908 Serial No. 452,096.

it may con cem citizen of the United States, and a resident of Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Electric Vchicle-Motors and Means for suspending thetion. I 4

My invention relates to electrically pro- Same, of' which the following is specifica- ,pelled locomotives and other vehicles and it 'has special reference to'the suspension of driving motors of very large capacity upon standard-gage trucks.

The objectof my invention is to provide improved means for suspending-an electric 7 driving motor on the truths of l5standardertmga very strong. draw bar phll and a suitable operative connection, between the rotating part of the motor and the wheels of the truck from which it is suspended.

When it is desiredzto equip a locomotive with a few very powerfuldriving motors,

the ordinary methods of m r suspension are found entirely inadequate on account of the large diameter of'the motor frame relative'to the diameter of driving wheels of ordinary dimensions.

' According to my present invention I mount the stationary partof the motor entirely above that-ruck axles, .which are ,pro-

vided with bearings for supporting said stationary member, and I connect the rotating art of the motor with the-driving wheels y means of a jack shaft, crank pins and connecting rods. .In order theta concentric relation may be maintained between the sta.

tionary and rotating parts of themotor for an indefinite length of time, I have provided two sets of-bearings for the motor armature,

' one set being tended merely to maintain a the 'desired relation, as above indicated, -wi thout reference to the. wear which may occur in the second set which are adapted to'.

' receive the thrust caused by'the r'e-action of 'the connecting'rods during the operation of the inotor. The rotating part off-the motor is connected to the drivingsha-ftby 'a yielding, connection and the jstationa'rfpart is associated with the rotating-part'b bear-- in as above indicated, so that consi erable re ative movement between these arts and the-driving shaft is permitted. T e flexible le .01 exconnection serves to largely absorb the torque varlatlons resulting from the use of s1ngle-phasealternating current energy of low frequency as a propelling force in the motor. As long as the two sets of bearings above referred to are concentric, the relative movementbetweenthe shaft and the parts of the motor is entirelyconfined to a rotary adjustment "but, as the outer bearings are worn, the driving shaft may'oscillate to a greater or less degree without causing any vibration inthe motor paths. 4

' The structural details which Ilprefer'to employ are illustrated in the' accompanying drawings and will be morc fully pointed out hereinafter. i -F1gure 1 of the accompanylng drawing is J a sectional elevation, in a vertical plane par- -allel to the motor axes, of a locomotive which Is equipped with a drivin motor constructed and suspended in accor ance with my iuapparatus shown in Fig. 1.

vention'. Fig; 2 is a side elevation of the Referring to the drawings, the device hereillustrated comprises a truck frame 1 and 'wheels 2 nounte'd onan'axle' 3, adriving frame 9 to which a substantially cylindrical laminated core member 10, having a plurality of inwardly projecting pole pieces '(not shown), is secured, end housings 11 which are similar to each other and are re .movably attached to opposite ends of the stationary frame 9, a driving shaft 12 which is rotatab ly mounted in bearings 13 that are rigldly mounted on the end housings and engage, thefshaft near its ends, a hollow cylinder 14 which is keyed to the shaft and forms an annular projection from its middle point, and a rotatable armature member 15 comprising a spider .16.- a cylindrical laminated core member 17, a winding 18, a com-c 'mut-ator 19, sleeves .or'quills..20 which fit loosely over the ends of the sha 'and are secured to the spider, 16 and bearing anembe'rs' 2i interposed between the outer'cylindrical surfaces oft-he quills or1 sleeves {ind the end brackets for 'maintaining a' concentric relationjbetween the stationary and-ro-- tatable parts' iifthe motor. 7 A drivin ,con-

nection lsestablished between the sha t: and

= the rotating part of the motor by means of la plurality of cylinders 22 which project vided with cranks 25 and crankpins 26 which are counter-balanced in the usual manner, and an operatlve connection 1s es- :tablished-between the shaft 12 and the jack shaft 5 by means of connecting rods 27, similar crank pins 28 being secured to the jack shaft for this purpose.

As already pointed out, the truck frameis resiliently mounted upon the truck axles and the end housings of the motor are supported by the truck frame. By reason of the bear directly over theside plates of the truck frame, consequently, the weight of the stationary part of the motor is borne directly ings 21 which maintain thecon'centric rela tion between the stationary and rotating parts ofthe motor, the weightof the rotating part is also indirectly; supported upon the truck frame. The shaft member, in addition to the rotating parts of the motor, is supported from the end housing but there is no direct rigid-connection between'the shaft 12 and the rotating part 1530f the machine, so that the weal-which usii'allymccurs in the bearings 13, since-they take up the thrii's't;due-- to the re-action of the crank shafts 2? when the motor is in operation, does notm any way etlect the concentric relation between the stationary and rotatin parts of the motor, nor are the irregularities-inthe motor torque as prominent in the jack shaftand in;- the wheels 2, to which it is connected b connecting rods 29, as would otherwise e the case. The advantages of interposing a resilient connection between the dItVlIlg shaft and the rotating part of the motor are well kncnvmand it will be readily understood by those skilled in the art that the arrangement illustrated and described isspecially adapted for the heavy service for which is intended. Since the detailsof the windings and the magnetically active parts of the motor are immaterial to my invention, I deem it unnecessary' to describe them specifically;

It conceivable that other means for establisbing a resilient connection between the shaft and the motor armature may be utilized in lieu of that illustrated and that various other structural modifications maybe effected within the spirit and scope of my invention.

I claim as my invention:

1. In an electrically propelled vehicle, the

in gs, and a resilient connection be 4. An-electric motor comprisin quills.

combination with a truck axle and a driving shaftoperatively connected thereto, of a motor comprising a rotatable part resiliently connected to the driving shaft near its middle point, a stationary part having bearings for taking the driving thrust and independent means for maintaining a concentric relation between'the two parts.

2'. In; an electrically propelled vehicle, the

combination with a truck axle and a driving shaft operatively connected thereto, of a motor comprising a rotatable part resiliently connected to the driving shaft near its middle point, a stationary part having driving shaft bearings for taking the driving stresses,

and means independent of the resilient conof bearings mounted on .the stationary mem;

ber of the machine, a driving shaft mounted,

in'one set of bearings and operatively com' nectedto-the-truckaxle, a rotatablepart' of.

the motormounted in the otherset. of bearrotatable part and the shaft. I

Qzyst-ationmmaary member having two sets of earings, a

rotatable member mounted inone set of bearmgs, a driving shaft mounted in the other set of bearings, and a resilient-connection between-iherotatable member and thedrivi'ng shaft, one set of said bearings being adapted to receive the driving strains and to-relieve the other set.

5. An electric'motor comprising a stationary frame, end housings secured thereto havin two. concentric sets of bearings, a mov ab e part rotatably mounted in one set of bearings,- and a driving shaft 'rotatably mounted in the other set ofbearings, and means for providing a yielding connection between the driving shaft and the rotatable part of the motor, whereby a concentric relation between the rotatable and stationary partsof the motor is maintained irrespective of the wear on the shaft bearings} 6. Anelectric motor comprising a stator, end-plates or housings therefor, eachhaving an outer and an inner bearing member, a rotor having sleeves or quills rotatabl mountedin the inner bearings and a sha extending loosely through the quills or sleeves and rotatably mounted within the outer bearin 's, and a ieldi connection between the riving sha- 7 An electric motor com rising a stator, end housings therefor, each? av ng an outer and t e sleeves or outer bearings and having throu h the crankshaft.

.. maintaining a suitab e and an inner bearing member, a rotor havng sleeves or quills rotatablymounted in the inner bearings and a shaft extending loosely through the quills'and rotatably mounted within the outer bearings, and a plurality of interposed springs between the sleeves or quills and the shaft. I

8. -An electric motor comprising a stator, end housings therefor, each having an inner and an outer bearing, a rotor, a pair of sleeves or quills secured thereto having adjacent annular end flanges, a shaft having an annular projection at the middle point extending between the end flanges of the quills through which the.ends of the shaftextend, said shaft being rotatably mounted in the a plurality of cylindrical pockets in its annular projection and said uills being rotatably mounted in the inner earings and joined by cylinders which extend through the pockets in the shaft .gro'ection and being separated therefrom y olical springs, the adjacent turns of which are eccentric.

9. In an electric vehicle, the combination with a frame and a motor having stationary and rotatable arts, of a crank shaft driven by the rotatab e part, and two sets of beerings in the stationar part for'respectively relation between the stationary and rotatable parts and for receiving the driving thrusts communicated 10. 11 an electric vehicle, the combination with a frame and a motor having stationary and rotatable parts, of a shaft driven by the rotatable part and relatively immovable concentricbeaiings' for respectively maintaining a suitable relation between the stationary and rotatable parts and for receiving the driving thrusts communicated through the shaft.

driving shaft,

lation between parts Copies of this patent may be obtained for with a truck axle, a truck frame resiliently mounted thereon, an electric motor compristween said shaft and the truck axle, of two concentric hearings in the stationarypartfor respectively maintaining a concentric rethe stationary and rotatable and for receiving the thrusts communicated through the driving shaft.

' v 12. In an electric vehicle, the combination with a truck axle, a truck frame resiliently 11. In an electric vehicle, the combination and driving connections bemounted thereon, and an electric motor comprising stationary and rotatable parts and a driving shaft, of a jack shaft rotatively supported in the frame, operative connections etween the motor shaft and the jack shaft and between the 'ack shaft and the axle, and two concentric earings in the stationary part for respectively maintaining a concentric relationbetween the stationary and rotatable parts and for receiving the thrusts communicated through the driving shaft.

, 13. In an electric vehicle, the combination with a truck axle, a truck frame resiliently mounted thereon, and an electric motor comprising stationary and rotatable parts and a driving shaft, of a jack shaft rotatively supported at one side of the truck axle'and operatively connected thereto, aside rod connection between the jack shaft and the motor shaft, and two concentric bearings in the stationary part for respectively maintaining a concentric relation between the stationary and rotatable parts and for receiving the thrusts communicated through the driving shaft.

14. In an electricvehicle, the combination with a pair of truck axles and a jack shaft rotatively supported between them and operatively connected thereto by side rod connections, of a motor havin stationary and rotatable parts and a cran shaft, and concentric bearings in the stationary part for respectively maintaining a concentric relation between the stationary androtatable parts and for receiving the driving thrusts communicated through the crank shaft.

15. An electric vehicle comprising a frame, an electric motor rigidly secured thereto and comprising stationaryand rotatable parts and a driving shaft, a jack-shaft rotatably supported in the vehicle frame and operatively connected to the driving shaft, and two concentric bearings in the stationary part ofthe motor for respectively maintaining a. concentric relation between the stationary and rotatable parts and for receiving the thrusts communicated through the driving shaft. I

In testimony whereof, I have hereunto subscribed my name this 31st day of August,

Witnesses:

Jos. L. C. DooN, BIRNEY HINES.

Washington, D. 0."

five cents each, by addressing the Commissioner of Patents,

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